CVE-2016-0034: Microsoft Silverlight Runtime Remote Code Execution Vulnerability
Vulnerability summary
CVE-2016-0034 is a high (CVSS 9.3) vulnerability in Microsoft Silverlight. It is known to be exploited: CISA lists it, first on 25-05-2022. It has been used in ransomware campaigns. EPSS estimates a 69.40% chance of exploitation in the next 30 days, higher than 99.3% of scored vulnerabilities.
Timeline
- 13-01-2016PublishedVulnerability first disclosed.
- 25-05-2022Added to CISA KEVMicrosoft Silverlight Runtime Remote Code Execution Vulnerability
- 15-06-2022CISA remediation dueThe impacted products are end-of-life and should be disconnected if still in use.
- 14-08-2026Last modifiedVulnerability information updated.
Description
Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding, which allows remote attackers to execute arbitrary code or cause a denial of service (object-header corruption) via a crafted web site, aka "Silverlight Runtime Remote Code Execution Vulnerability."
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
69.40%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 69.40% on 19-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 25-05-2022
- Federal due date
- 15-06-2022
CISA required action
The impacted products are end-of-life and should be disconnected if still in use. nvd.nist.gov/vuln/detail/CVE-2016-0034
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Microsoft1 product
- silverlight≥ 5.0, < 5.1.41212.0
1 vendor · 1 product
References
3 links
docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-006Vendor AdvisoryX Refsource MSPatch- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-0034Government ResourceUS Government Resource